An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Mehrotra DV, Liu F, Permutt T.Mehrotra DV, et al. Among authors: liu f.Pharm Stat. 2017 Sep;16(5):378-392. doi: 10.1002/pst.1817. Epub 2017 Jun 20.Pharm Stat. 2017.PMID: 28631331
Li W, Bai X, Deng Q, Liu F, Chen C.Li W, et al. Among authors: liu f.Stat Med. 2021 May 20;40(11):2556-2577. doi: 10.1002/sim.8917. Epub 2021 Mar 15.Stat Med. 2021.PMID: 33723865
Chen C, Liu F, Ren Y, Suttner L, Sun Z, Shentu Y, Schmidt EV.Chen C, et al. Among authors: liu f.Contemp Clin Trials. 2020 Nov;98:106126. doi: 10.1016/j.cct.2020.106126. Epub 2020 Aug 24.Contemp Clin Trials. 2020.PMID: 32853780
Wang Y, Zhou X, Guo Z, Fang X, Liu F, Shen L.Wang Y, et al. Among authors: liu f.Contemp Clin Trials. 2024 Jun;141:107434. doi: 10.1016/j.cct.2024.107434. Epub 2024 Jan 10.Contemp Clin Trials. 2024.PMID: 38215875